单项选择题
Which of the following is the purpose of the sigverif.exe utility?（）
A. Encrypt a file for secured electronic delivery.
B. Confirm the digital certificate to check file integrity.
C. Remove non-certified drivers from the driver cache.
D. Choose the level of driver certification to use when installing device drivers.
相关考题
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单项选择题
A technician is performing a memory upgrade by installing an additional 1GB stick of DDR RAM into a system. When the installation is complete, the computer shows 2GB of RAM at POST; however, it now indicates a lower speed setting for the memory. Which of the following is the MOST likely cause?（）
A. The newly installed RAM has a lower clock speed than the existing RAM.
B. The CPU is not configured to work with the additional RAM.
C. The system is incompatible with the new RAM.
D. The new RAM is of lower quality, and not dependable at higher speeds. -
单项选择题
A user reports that they are unable to open any audio files. Yesterday, the user uninstalled third party music software. Which of the following is the MOST likely cause of the user’s error?（）
A. The file associations were not returned after the software was uninstalled.
B. The user is not opening the files correctly.
C. The uninstalled software has corrupted all the audio files on the computer.
D. The sound card is not properly configured. -
单项选择题
A technician is installing a memory upgrade for a remote user. The technician notes that the machine is not reporting the correct amount of memory that was installed during the POST step. Which of the following actions should the technician perform FIRST?（）
A. Replace the newly installed memory modules with another known-working unit.
B. Remove and reseat the memory, and recheck the memory reported.
C. Leave the configuration intact, and check cabling to ensure nothing was loose during the installation.
D. Perform a BIOS upgrade on the machine.
